Jeremiah 12:5
5 If thou hast run with the footmen, and they have wearied thee, then how canst thou contend with horses? and if in the land of peace, wherein thou trustedst, they wearied thee, then how wilt thou do in the swelling of Jordan?
swelling of Jordan
That is, Under such a test as in (Jeremiah 49:19); (Jeremiah 50:44); (Joshua 3:15); (1 Chronicles 12:15).